sonata-project / SonataMediaBundle

src/Thumbnail/ConsumerThumbnail.php

<?php

declare(strict_types=1);

/*
 * This file is part of the Sonata Project package.
 *
 * (c) Thomas Rabaix <thomas.rabaix@sonata-project.org>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Sonata\MediaBundle\Thumbnail;

use Sonata\MediaBundle\Model\MediaInterface;
use Sonata\MediaBundle\Provider\MediaProviderInterface;
use Sonata\NotificationBundle\Backend\BackendInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

/**
 * @final since sonata-project/media-bundle 3.21.0
 */
class ConsumerThumbnail implements ThumbnailInterface
{
    /**
     * @var string
     */
    protected $id;

    /**
     * @var ThumbnailInterface
     */
    protected $thumbnail;

    /**
     * @var BackendInterface
     */
    protected $backend;

    /**
     * @var EventDispatcherInterface
     */
    protected $dispatcher;

    /**
     * NEXT_MAJOR: remove optional null for EventDispatcherInterface.
     *
     * @param string                   $id
     * @param EventDispatcherInterface $dispatcher
     */
    public function __construct($id, ThumbnailInterface $thumbnail, BackendInterface $backend, ?EventDispatcherInterface $dispatcher = null)
    {
        /*
         * NEXT_MAJOR: remove this check
         */
        if (null === $dispatcher) {
            @trigger_error(

It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended.

                'Since version 3.0, passing an empty parameter in argument 4 for __construct() in '.__CLASS__.' is
                 deprecated and the workaround for it will be removed in 4.0.',
                E_USER_DEPRECATED
            );
        }

        $this->id = $id;
        $this->thumbnail = $thumbnail;
        $this->backend = $backend;
        $this->dispatcher = $dispatcher;
    }

    public function generatePublicUrl(MediaProviderInterface $provider, MediaInterface $media, $format)
    {
        return $this->thumbnail->generatePrivateUrl($provider, $media, $format);
    }

    public function generatePrivateUrl(MediaProviderInterface $provider, MediaInterface $media, $format)
    {
        return $this->thumbnail->generatePrivateUrl($provider, $media, $format);
    }

    public function generate(MediaProviderInterface $provider, MediaInterface $media): void
    {
        $backend = $this->backend;
        $id = $this->id;

        $publish = static function () use ($backend, $media, $id): void {
            $backend->createAndPublish('sonata.media.create_thumbnail', [
                'thumbnailId' => $id,
                'mediaId' => $media->getId(),

                // force this value as the message is sent inside a transaction,
                // so we have a race condition
                'providerReference' => $media->getProviderReference(),
            ]);
        };

        /*
         * NEXT_MAJOR: remove this check
         */
        if (null === $this->dispatcher) {
            $publish();
        } else {
            $this->dispatcher->addListener('kernel.finish_request', $publish);
            $this->dispatcher->addListener('console.terminate', $publish);
        }
    }

    public function delete(MediaProviderInterface $provider, MediaInterface $media, $formats = null)
    {
        return $this->thumbnail->delete($provider, $media, $formats);
    }
}